I do but fairly limited, only did it a couple of times and it was some time ago. I quite liked it actually. It has a pretty nice 'benzo-'euphoria (I don't consider benzos truly euphoric, but hypnotics tend to give me just a wee bit of brief euphoria when they kick in). Nitrazepam is one of the better hypnotic benzos for sure IMO. Better than, say, lormetazepam or halcion (I don't like halcion at all, it's just pure, heavy sedation with close to zero euphoria). But lormetazepam is quite decent, but I still prefer nitrazepam.
So yeah, for recreational use it's a pretty nice benzo, better than bromazepam as well. When it's for anxiety and when using as prescribed bromazepam is the best for me though hands down. But if you're looking to sleep like a baby or for recreational effects I believe hypnotics is where it's at, and nitrazepam is a really nice hypnotic both when used as prescribed (functional) or if abused (recreational).
So far I've found that brotizolam has the most euphoria from all the hypnotic benzos that I've tried. Clotiazepam is pretty nice too in terms of euphoria. These last 2 I mentioned are both thienodiazepines. I don't think that's a coincidence as from what I've read, etizolam, which is also a thienodiazepine, is also praised for having a kind of euphoria.
All in all it's a pretty great benzo. Maybe I'll ask my doc for those when I go back in a month.
Hope that helped, Sorry if there's incoherency in this 5+ but I kept nodding off as I was typing it. Wow, a bloody hour and a half has passed since I started to write this post. And it's getting light out. I don't mind, cause I feel good and euphoric as hell right now. Hehe, time to really hit the sack now and nod off for a bit. Goodnight,

or actually, good morning is a bit more accurate.